Applications of Ionizing Radiation in Mutation Breeding

Çelik, Özge; Atak, Çimen

doi:10.5772/66925

Cited by 18 publications

(9 citation statements)

References 41 publications

(61 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…γ‐rays and EMS were chosen as mutagens due to their broad applicability in crop improvement programs. The γ‐rays are widely used to induce genetic variation in quantitative traits like yield (Celik & Atak, 2017; Laskar & Khan, 2017). So far, γ‐rays have been successful in developing1673 mutants in a wide range of crops (https://mvd.iaea.org/ accessed May 2020).…”

Section: Methodsmentioning

confidence: 99%

Quantitative assessments on induced high yielding mutant lines in urdbean [Vigna mungo (L.) hepper]

et al. 2021

View full text Add to dashboard Cite

Vigna mungo (L.) hepper is an important grain legume with immense potential for establishing food security worldwide. However, the low genetic variability due to the self-pollination mode of reproduction restricts its improvement endeavours. Therefore, the present study aimed at increasing the genetic variability and mean values of quantitative traits was undertaken by treating two widely cultivated varieties T-9 and Pant U-30, with low, intermediate and high doses of gamma rays and ethyl methanesulfonate in single and combination sets. The study accomplished selection of six mutant lines with augmented yield and manifold increase in genetic parameters, namely, genotypic coefficient of variation (GCV), heritability (h 2 ), and genetic advance (GA) for economically important traits in M 3 generation. A substantial increase in mean values of fertile branches per plant, pods per plant, and total plant productivity was noticed among the mutant lines. Phenotypic correlation between various character pairs showed a positive and significant relationship among the number of fertile branches, pods, total plant productivity, and negative association between the seed protein content and total plant yield in the selected mutant lines.In the control population, nitrate reductase activity (NRA), chlorophyll, carotenoid, and protein levels were significantly higher in M 3 mutant lines in both varieties. The number and intensity of electrophoretic bands for seed protein in the mutant lines differed from the controls, indicating the mutagen induced polymorphism in protein bands among the mutant lines. In conclusion, the M 3 high yielding mutant lines increased genetic variability, yield, protein, and pigment concentrations, isolated in this study, could serve as a valuable germplasm resource for black gram improvement programs.

show abstract

Section: Methodsmentioning

confidence: 99%

Quantitative assessments on induced high yielding mutant lines in urdbean [Vigna mungo (L.) hepper]

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Several sources of genetic variation are available to complement the genetic paucity of modern elite cultivars. Genetic diversity generated artificially through mutagenesis has proven a valuable resource for various crop species, as variants can be directly produced in commercial germplasm (Caldwell et al ., ; Mba, ; Nikam et al ., ; Gulfishan et al ., ; Çelik and Atak, ; Pando and Deza, ; Wang et al ., ; Tu Anh et al ., ). However, given that salt tolerance is most likely to arise from the concerted effects of numerous mechanisms, the potential to artificially create salt tolerant variants is surely limited.…”

Section: Harnessing the Genetic Diversity Of Exotic Germplasmmentioning

confidence: 99%

Salt stress under the scalpel – dissecting the genetics of salt tolerance

et al. 2019

View full text Add to dashboard Cite

Summary Salt stress limits the productivity of crops grown under saline conditions, leading to substantial losses of yield in saline soils and under brackish and saline irrigation. Salt tolerant crops could alleviate these losses while both increasing irrigation opportunities and reducing agricultural demands on dwindling freshwater resources. However, despite significant efforts, progress towards this goal has been limited, largely because of the genetic complexity of salt tolerance for agronomically important yield‐related traits. Consequently, the focus is shifting to the study of traits that contribute to overall tolerance, thus breaking down salt tolerance into components that are more genetically tractable. Greater consideration of the plasticity of salt tolerance mechanisms throughout development and across environmental conditions furthers this dissection. The demand for more sophisticated and comprehensive methodologies is being met by parallel advances in high‐throughput phenotyping and sequencing technologies that are enabling the multivariate characterisation of vast germplasm resources. Alongside steady improvements in statistical genetics models, forward genetics approaches for elucidating salt tolerance mechanisms are gaining momentum. Subsequent quantitative trait locus and gene validation has also become more accessible, most recently through advanced techniques in molecular biology and genomic analysis, facilitating the translation of findings to the field. Besides fuelling the improvement of established crop species, this progress also facilitates the domestication of naturally salt tolerant orphan crops. Taken together, these advances herald a promising era of discovery for research into the genetics of salt tolerance in plants.

show abstract

“…In the present study, we chose γ rays and SA due to their high effectiveness and efficiency in inducing different mutations. Among the physical mutagens, γ rays are mainly used to improve economically important yield and yield contributing traits (Celik and Atak, 2017 ). Gamma rays have successfully developed 1,716 mutants in different crop species (see text footnote 1).…”

Section: Discussionmentioning

confidence: 99%

Gamma Rays and Sodium Azide Induced Genetic Variability in High-Yielding and Biofortified Mutant Lines in Cowpea [Vigna unguiculata (L.) Walp.]

Raina

Laskar²,

Wani

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

With the twin pressures of high population growth and extreme weather events, developing countries are the worst hit in meeting the food demands of their people, with millions unable to access adequate and nutritionally balanced food. Crop production must be increased by 70% to keep up with the food demands of a rapidly growing population, which is expected to rise to 9.6 billion by 2050. Legumes are ideal food crops to increase agricultural productivity and achieve sustainable development goals. Cowpea, a warm-season grain legume, is often categorized as a neglected crop with immense scope for genetic improvement through proper breeding strategies. A multi-year field experiment of induced mutagenesis was conducted to increase seed yield and genetic variability in the agro-economic traits of two cowpea varieties treated with different doses of gamma (γ) rays and sodium azide (SA). The study was also aimed to optimize different doses of γ rays and SA employed individually and in combinations. Quantitative trait analysis revealed a maximum increase in seed yield from M2 to M3 generation. Among the 10 quantitative traits studied, seeds per pod and seed weight positively correlated with a major direct impact on yield. An extensive phenotypic selection cycle from M2-M4 generations resulted in isolating new high-yielding and nutrient-dense mutant lines. Such high-yielding biofortified mutant lines with enhanced genetic variability could serve as a donor of elite genes and represent a valuable genetic resource for improving low-yielding warm-season grain legumes.

show abstract

Applications of Ionizing Radiation in Mutation Breeding

Cited by 18 publications

References 41 publications

Quantitative assessments on induced high yielding mutant lines in urdbean [Vigna mungo (L.) hepper]

Quantitative assessments on induced high yielding mutant lines in urdbean [Vigna mungo (L.) hepper]

Salt stress under the scalpel – dissecting the genetics of salt tolerance

Gamma Rays and Sodium Azide Induced Genetic Variability in High-Yielding and Biofortified Mutant Lines in Cowpea [Vigna unguiculata (L.) Walp.]

Contact Info

Product

Resources

About